Improvement in pipe-tongs



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Letters .Patent No. 98,925, dated January 18, 1870.

. IMPRQVEBENT IN PIPE-.TONG-S.

The schedule referred to in these Letters Patent and making part of the same,

To all whomvit may concern Be it known VthatI, JOHN GLARK,'of Astoria, in the county of Queens, and State of New York, have in vented a new and useful Improvement in Pipe-Tongs and I do hereby declare. that the following is a full, clear, and exact description thereof, which will enable others skilled in the art to make and use the same, reference being had to the accompanying drawing, forming part of this specification, in which the gure is a side view of my improved pipe-tongs. v

My invention has for its object io furnish an improved pipe-tongs, simple in construction, and elfective in operation, and which will operatewith equal eiciency upon various sizes of pipes; and

It consists in'the construction and combination of the various parts of the tongs, `as hereinafter .more fully described.

A is the handle vof the tongs, upon the rorward end of which is formed the hook a, that receives the pipe to be turned, the concavity of which hook is so formed, as shown in the ligure, as to receive diierent sized pipestand hold them equally rm.

Bis a movable cam-lever jaw, which is pivote-d, at one end, in a slot formed in the body ofthe handle A, at the base of the hook al, and which has teeth formed upon its curved side, as shown in the ligure, to take.

hold of the pipe to be operated upon.

The cam B may, if desired, be made in the form of a toothed wheel, pivoted, at or near its rim, to the handle A, and at its centre to the lever G but I prefer the construction rs-t described, as being simpler and equally effective.

0 is a lever, the forward part of which is curved or i bent, as shown in the figure, to adapt it to passing through the slot in the handle A, and operating the movable jaw B, to which jaw the forward end of the said lever is pivoted,as shown inthe drawing.

The outer end of the lever C has an eyev formed in,

or attached to it, which slides alongI a guide-rod or tongue, D, attached to or formedfupon `the outer part a2 ofthe handle A, which said part a2 is inclined rearward, to give a suitable direction to the lever O, when operating the movable jaw B. i The lever Gis required merely to move the jaw B to and from the pipe to be operated upon, the peculiar arrangement of the hook and jaw being such as to cause them to grasp and hold the pipe rmly when being operated.

'Having thus described my invention,

I claim as new, and desire to secure by Letters Patent- An improved pipe-tongs, Aformed hy the combinav'fion of the handle A al a, movable cam-lever jaw B, 

